Hair washing sink



FIG. 1 is a perspective downward-looking view of a hair washing sink in accordance with the present invention;

FIG. 2 is an elevational front view of the hair washing sink of FIG. 1;

FIG. 3 is an elevational rear view of the hair washing sink of FIG. 1;

FIG. 4 is an elevational left-side view of the hair washing sink of FIG. 1;

FIG. 5 is an elevational right-side view of the hair washing sink of FIG. 1;

FIG. 6 is a top view of the hair washing sink of FIG. 1; and,

FIG. 7 is a bottom view of the hair washing sink of FIG. 1. 

CLAIM The ornamental design for a hair washing sink, as shown and described. 